graceful-fs functions as a drop-in replacement for the fs module, making various improvements.
The improvements are meant to normalize behavior across different platforms and environments, and to make filesystem access more resilient to errors.
Improvements over fs module
- keeps track of how many file descriptors are open, and by default limits this to 1024. Any further requests to open a file are put in a queue until new slots become available. If 1024 turns out to be too much, it decreases the limit further.
lchmodfor Node versions prior to 0.6.2.
fs.lutimesif possible. Otherwise it becomes a noop.
lchownif the user isn't root.
lchownbecome noops, if not available.
- retries reading a file if
readresults in EAGAIN error.
On Windows, it retries renaming a file for up to one second if
EPERM error occurs, likely because antivirus software has locked
The maximum number of open file descriptors that graceful-fs manages may
be adjusted by setting
fs.MAX_OPEN to a different number. The default